Industries that rely on hands-on technical proficiency often struggle with the same challenges: access to equipment, safety risks, high training costs, and the logistics of bringing people and machinery together. Gesture-based training offers a compelling alternative. Using only a standard camera, learners can assemble mechanical components in a 3D environment with natural hand movements. This article explores the history and evolution of gesture-recognition technology, how a globe-valve assembly prototype was built, and why this emerging approach has the potential to reshape the future of